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Monel 400 UNS N04400 Bar / Seamless tube/ Wire/ flange

Common Trade Names:

Monel alloy 400 ,alloy 400,Monel nickel-copper alloy 400 ,UNS N04400,W.Nr. 2.4360

Monel400  is a nickel-copper solid solution strengthened alloy. The alloy is characterized by moderate strength, good weldability, good general corrosion resistance and toughness. It is useful at temperatures up to 1000°F (538°C). Alloy 400 has excellent resistance to rapidly flowing brackish or seawater where cavitation and erosion resistance is necessary. It is particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated. Alloy 400 is slightly magnetic at room temperature.   Monel 400 Chemical Composition









Monel 400


 63  -  -  -  - -  28.0




 0.3  2.0  0.5  0.24  34.0
Monel 400 Physical properties
Density 8.83 g/cm³
Melting point 1300-1390 ℃
Monel 400 Alloy minimum mechanical properties in the roomtemperature
Status Tensile strength Rm N/mm² Yield strength Rp 0. 2N/mm² Elongation As % Brinell hardness HB
Solution treatment 480  170  35 135 -179

Monel 400  Standards and Specifications

ASTM B127/ASME SB-127, ASTM B163/ASME SB-163, ASTM B165/ASME SB-165
Bar/Rod Forging  Strip/Coil Sheet/Plate Pipe/Tube
ASTM B164 ASTM B564  ASTM B127 ASTM B163/ASME SB-163, ASTM B165/ASME SB-165

Monel 400 Available Products in Sekonic Metals

Monel 400 Bars & Rods

Round bars/Flat bars/Hex bars,     Size From 8.0mm-320mm, Used for bolts,fastners and other spare parts

Monel 400 Wire

Supply in welding wire and spring wire in coil form and cut length.

Monel 400 sheet & plate

Widths up to 1500mm and lengths up to 6000mm,Thickness from 0.1mm  to 100mm.

Monel 400 seamless tube & Welded pipe

Standards size and  customized dimension can be produced by us with small tolerance

Monel 400 strip & coil

Soft condition and hard condition with AB bright surface, width up to 1000mm

Monel 400 fasetners

Monel 400 materials  in forms of Bolts,screws,flanges and other fasterners, according to clients specification.

Why Monel 400 ?

Resistant to seawater and steam at high temperatures Excellent resistance to rapidly flowing brackish water or seawater Excellent resistance to stress corrosion cracking in most freshwaters Particularly resistant to hydrochloric and hydrofluoric acids when they are de-aerated Offers some resistance to hydrochloric and sulfuric acids at modest temperatures and concentrations, but is seldom the material of choice for these acids Excellent resistance to neutral and alkaline salt Resistance to chloride induced stress corrosion cracking Good mechanical properties from sub-zero temperatures up to 1020° F High resistance to alkalis

Monel 400 Application field:

Marine engineering Chemical and hydrocarbon processing equipment Gasoline and freshwater tanks Crude petroleum stills De-aerating heaters Boiler feed water heaters and other heat exchangers Valves, pumps, shafts, fittings, and fasteners Industrial heat exchangers Chlorinated solvents Crude oil distillation towers